干旱区地理2025，Vol.48Issue(3)：506-516,11.DOI:10.12118/j.issn.1000-6060.2024.219
黄河流域典型绿洲城市扩张模拟及其生态韧性响应研究
Simulation of urban expansion and its response to ecological resilience of typical oases in the Yellow River Basin
摘要
Abstract
Establishing a robust ecological network is essential for enhancing urban ecological resilience.Using the central urban area of Yinchuan City,a representative oasis city in the Yellow River Basin of China,as a case study,changes in the urban ecological network and its resilience responses to impervious surface expansion were simulated and analyzed using the PLUS model.The results indicate the following:(1)Rapid expansion of imper-vious surfaces has occurred in central Yinchuan City.The impervious surface area in 2020 expanded to be 2.61 times larger than that in 2000,and by 2030,the area is projected to be 3.24 times larger than in 2000.The spatial pattern of impervious surfaces evolved from an east-west longitudinal"一"pattern to a rightward-tilting"T"pat-tern,with further strengthening of this horizontal"T"pattern by 2030.(2)With the expansion of impervious sur-faces,the ecological network pattern in the central urban area has undergone substantial changes.In 2000,a sin-gle-ring ecological network was observed around the urban fringe.By 2020,the outer ring expanded westward,and the inner ring shifted northward,forming a more intricate circuit in the northeastern sector.Simulations pre-dict that by 2030,the ecological network will exhibit a"川"structure.(3)Both structural and functional resil-ience of the ecological network have improved.Between 2000 and 2020,the α,β,and γ indices increased by 0.09,0.17,and 0.06,respectively,while network dissemination and diversity rose by 0.08 and 0.29,respectively.By 2030,further enhancements in structural and functional resilience are expected,though the overall resilience level will remain low.关键词
绿洲城市/生态网络/韧性/PLUS模型/黄河流域Key words
oasis city/ecological networks/resilience/PLUS model/Yellow River Basin引用本文复制引用
刘园园,马彩虹,马丽娅..黄河流域典型绿洲城市扩张模拟及其生态韧性响应研究[J].干旱区地理,2025,48(3):506-516,11.基金项目
国家重点研发计划项目子课题(2023YFF1304705) （2023YFF1304705）
宁夏高等学校自然科学项目(NYG2024007)资助 （NYG2024007）
